i am in awe to you sir. i have been looking around at different gundam models that have been made and this one tops the rest by far in my opinion. the rest are not 100% functional or transformable but this one.. hell your showing it here! i hope you dont mind but i will be looking at this as a referance for when i design my own if you would like i can send you the link to the sketchup model once it is complete.
The first thing is you need to visualize a lot in 3D. One good way is to make a sketch of the object you want make in 6 views (front, back, left, right, top and bottom) and in 3D view. This will give you a better understanding of the object.
Hopefully I won't come off as too annoying here, asking another question, but any tips on designing a transforming mecha? For some reason, they give me the fits. (It's mostly figuring out where arms should go without it looking retarded)